Korean Multicenter Prospective Registry of In.PACT DEB for Isolated Popliteal Artery Disease (K-POP Study)

Inclusion Criteria: 1. Age 19 years or older 2. Symptomatic peripheral artery disease: * Moderate or severe claudication (Rutherford category 2 or 3) * Critical limb ischemia (Rutherford category 4 or 5) 3. Atherosclerotic popliteal artery disease (stenosis \> 50%) 4. Patients with signed informed consent Exclusion Criteria: 1. Acute critical limb ischemia 2. Severe critical limb ischemia (Rutherford category 6) 3. Involvement of SFA disease with stenosis 4. Continous total occlusion of all proximal infrapopliteal arteries (origin of the anterior tibial artery or tibioperoneal trunk). 5. Known hypersensitivity or contraindication to any of the following medications: heparin, aspirin, clopidogrel, or contrast agent 6. Age \> 85 years 7. Severe hepatic dysfunction (\> 3 times normal reference values) 8. Significant leucopenia, neutropenia, thrombocytopenia, anemia, or known bleeding diathesis 9. LVEF \< 40% or clinically overt congestive heart failure 10. Pregnant women or women with potential childbearing 11. Life expectancy \<1 year due to comorbidity 12. Previous bypass surgery or stenting for the target popliteal artery 13. Untreated inflow disease of the ipsilateral pelvic or femoropopliteal arteries (more than 50% stenosis or occlusion)